JPS6152852A - Pulse measuring device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for easily knowing the level of pulse rate while exercising.

[Background of the invention]

In recent years, the number of people who are exercising to manage their health has increased rapidly. On the other hand, the number of exercise classes and exercise instruction manuals aimed at maintaining and improving health is rapidly increasing, and according to them,
In order for exercise to be effective, people are instructed to exercise at an intensity that allows them to maintain their pulse rate at around 70% to 80% of their maximum pulse rate. Against this background, wristwatches equipped with pulsometers have begun to be commercially available in recent years. However, the pulse rate detection method of the above-mentioned wristwatch with a pulsometer is a photoelectric detection type or an electrocardiogram detection type pulse sensor attached to the top of the watch case. There is a case detection method that detects changes in electrocardiograms and potential changes, and a cord detection method that attaches electrodes for detecting cardiac potential to the wearer's chest and connects the electrodes to the wristwatch after removing the cord. A digital display method is used to display numbers on the display section of a wristwatch.

However, if we consider the case where the wearer attempts to measure the pulse using the above-mentioned pulse rate monitor watch while jogging or other exercise, in the case of the former case detection method, the wearer would place his or her fingertip on the pulse sensor while running. This method has disadvantages in that it results in unnatural motions, which impede movement, and also in that the state of the fingertips placed on the fingertips changes due to body vibrations, making stable detection impossible. On the other hand, in the case of the cord detection method, the detection operation is relatively stable even during jogging, but since the chest and arm are connected by a cord, it still has the disadvantage that it is difficult to run. In addition, since pulse rate information is digitally displayed on the display of the wristwatch, you must frequently bend your arm to read the display while exercising, which not only hinders your exercise but also causes vibrations in your body. This has the disadvantage that the display is difficult to read.

Therefore, the pulse rate monitor watches currently on the market cannot be said to be sufficient as measurement devices for maintaining the exercise intensity based on the above-mentioned instruction manual. The development of pottery was strongly (desired).

[Purpose of the invention]

The present invention is intended to meet the above-mentioned needs, and aims to provide a full-scale pulse measuring device that can be stably used while exercising.

[Structure of the invention]

The configuration of the present invention provides a level judgment that ranks the measured pulse rate into a plurality of predetermined levels in a measuring device that measures pulse rate by detecting changes in blood flow and electric potential in the human body using a sensor. By providing a circuit, an acoustic signal generation circuit that generates different acoustic signals according to each level signal from the level determination circuit, and an acoustic transducer driven by the acoustic signal from the acoustic signal generation circuit, the pulse rate can be determined by It is characterized by notification depending on the type.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings. As mentioned above (for effective exercise, the pulse rate during exercise should be 60% or more of the maximum pulse rate)
Exercise intensity is required to be around 80%.

Further, the maximum pulse rate is expressed as (maximum pulse rate = 210 - 0.8 x age), although it depends on individual ability differences. Figure 1 shows 100%, 90%, and 90% of the maximum pulse rate for age.
This is a graph of load pulse rates at 80%, 70%, and 60%. Furthermore, with respect to the load pulse rate, as a primary rank, it is 105/min or less, and as a B rank, it is 105 ~
125/min, C rank [125-140/min, D rank 140-155/min, E rank 155]
Pulse rate is divided into 5 ranks of /min or more and the rank line is added. Comparing the relationship between the rank line and the load pulse rate, it can be seen that the classification can be made as shown in Table 1.

In the table, ◎ indicates an effective exercise, O indicates a slightly large or too small load, and × indicates a too large load.

The ranked pulse rate values shown here are examples.

Therefore, by using sound technology to output a buzzer sound for each rank or to output the numerical value of the rank as a voice, users can compare their own age and
This means knowing the exercise load that is being applied to you.

FIG. 2 shows an external view of an ear-hook pulse measuring device which is an embodiment of the present invention.

In FIG. 2, 1 is a battery case containing a battery, 2 is a sensor for measuring pulse rate, and an electronic circuit that calculates the signal from the sensor to determine the pulse level and creates an acoustic signal for each level. 3 is a pulse detection box that houses a buzzer etc. that converts an acoustic signal into sound, and 3 mechanically connects the pulse detection box 2 and the battery case 1;
The lead wire for connecting the power source of the battery case 1 to the pulse detection box 2 is integrated into a connecting member that allows the pulse detection box 2 to be easily hooked onto the ear. The two-dot chain line indicates the large ear. Therefore, as is clear from the figure, the ear-hook type pulse measuring device of this embodiment is hooked onto the upper part of the ear by the connecting member B, and the earlobe at the lower part of the ear is detected by the battery case 1 and the pulse detection box 2. It is designed to be pinched. Next, FIG. 3 shows a cross section taken along the line AA in FIG. 2. In Fig. 3, 4 is a battery housed in a battery case 1, and 5 is a pulse sensor using a photocoupler composed of a light emitting diode and a phototransistor for photoelectrically detecting the pulsating flow of blood in the capillaries of the earlobe. It is. 5a is a connection spring for electrically connecting the pulse sensor 5 and the circuit board 6. 6 calculates the signal of the pulse sensor 5 to determine the level of the pulse value;
A circuit board equipped with an electronic circuit that emits acoustic signals.

7 is a buzzer that converts the acoustic signal output from the electronic circuit into audible sound. 7a is a buzzer connection spring that electrically connects the buzzer 7 and the circuit board 6. 2a is a sound emitting hole for emitting the sound of the buzzer 7, and 2b is a detection window for the optical signal of the pulse sensor 5. 8 indicates the earlobe. As explained in FIG. 2, the earlobe 8 is sandwiched between the battery case 1 and the pulse detection box 2. Thereby, the amount of reflection of near-infrared light emitted by the light emitting diode of the pulse sensor 5 changes depending on changes in the blood flow flowing through the capillaries of the earlobe. By capturing the change in the amount of reflection by the phototransistor in the pulse sensor 5, a change in blood flow, that is, a pulse can be detected. A predetermined acoustic signal obtained by calculating this pulse signal is manually applied to the buzzer 7 via the buzzer connection spring 7a, and the buzzer 7 emits a notification signal classified by pulse rate.

Next, the circuit configuration of the pulse measuring device will be explained using FIG. 4.

FIG. 4 is a circuit block diagram of the pulse measuring device shown in FIGS. 1 and 2, where 5 is a pulse sensor using the photocoupler explained in FIG. 11 is an amplifier circuit 1 for
A waveform shaping circuit 12 outputs a sensor pulse signal P by shaping the signal amplified by 0, and a waveform shaping circuit 12 divides the frequency of the sensor pulse signal P and generates a signal S for starting measurement for each pulse.
A frequency divider 16 that divides T into a signal ST that ends the measurement,
This is a period counter for measuring the time interval of the sensor pulse signal P by being controlled by the signals ST and SP. 14 is measurement data DA of the period counter 16
The first memory 14 is a data memory for storing
a, a second memory 14b, a third memory 14C, and a fourth memory 14d. First, the first measurement data DA is input to the first memory 14a, and the next data transfer signal DT causes
The data stored in the first memory 14a is the second memo! J
14b, the first memory 14a stores new measurement data DA based on the periodic color/reference 16, and the first to fourth memories 14a to 14d store the latest four measurement data DA. There is. 15 is a data memory 14
This is a data selection circuit for comparing the data stored in the first memory 14a to the fourth memo 14d, excluding the data having the maximum value and the minimum value, and selecting the two intermediate data. Reference numeral 16 denotes an arithmetic circuit that uses the two pieces of intermediate data selected by the data selection circuit 15 to calculate the average pulse rate value M at that time. 17 is a level determination circuit for determining which of M1 to M5 the current pulse rate level is based on the calculation result M by the calculation circuit 16;
18 is an audio signal generation circuit for outputting five different types of audio signals A to E according to the determination result determined by the level determination circuit 17, and 19 is an audio signal generating circuit for driving a buzzer according to the output of the audio signal. This is an acoustic vibration circuit for Reference numeral 20 denotes a control signal generating circuit for controlling the timing of pulse measurement, calculation, buzzer driving, etc. by each of the circuits.

The operation of the pulse detector having the above system blocks will be explained with reference to the time chart shown in FIG.

As shown in FIG. 3, an electrical signal detected by the pulse sensor 5 that detects changes in the blood flow in the earlobe is amplified by the amplifier circuit 10 and output as a sensor pulse signal P via the waveform shaping circuit 11. As shown in FIG. 5, when the sensor pulse signal P is being output and the measurement signal S1 output from the ili control signal generation circuit 20 reaches the I level, the frequency divider 12 and the period counter 16 are in the operating state. become. Therefore, the frequency divider 12 divides each sensor pulse signal P into a measurement start signal ST and a measurement end signal ST as shown in FIG. A control signal generation circuit 20 measures the period of the sensor pulse signal P, shown as TP in the figure, outputs the measurement data DA, and outputs the measurement end signal SP at the end of the measurement.
supply to. The control signal generation circuit 2o, which has received the measurement end signal SP, outputs the data transfer signal DT with a slight delay and supplies it to the data memory 14. The data memory 14 that receives the data transfer signal DT clears the data stored in the fourth memory 14d, transfers the data stored in the third memory 14c to the fourth memory IJ14d, and transfers the data stored in the second memory 14b. to the third memory 14'c, and then to the first memo')
14a are transferred to the second memory 14b, and the latest measurement data DA by the period counter 16 is stored in the first memory 14a. Next, the cycle color/receiver 16 is reset again by the measurement start signal ST and starts measurement. In this way, when the latest four measurement data DA have been stored in the data memory 14, the control signal generation circuit 20 outputs the calculation command signal s2, so that the data selection circuit 15 and the calculation circuit 16 are brought into the operating state. become. First, the data selection circuit 15 compares the four pieces of measurement data stored in the data memory 14, and
The maximum value and the minimum value are removed, and two intermediate values of measurement data are output to the arithmetic circuit 16. Next, the calculation circuit 16 calculates the average pulse rate M based on the two measurement data, and outputs the calculation result to the level determination circuit 17. At this time, a calculation command is issued.

Therefore, the level determination circuit 17, based on the average pulse rate M,
It is determined which level the value is, and depending on the determination result, one of the signals M1 to M5 is designated and output. Then, in accordance with this specified output, the acoustic signal generating circuit 18 selects and outputs the specified sound output A to E, and drives the buzzer via the acoustic driving circuit. The acoustic signals A to E may be buzzer sounds having different frequencies, or may be audible warning signals.

〔Effect of the invention〕

As described above (according to the present invention, the measurement results can be directly notified to the ear using different acoustic signals, so it is possible to maintain the optimal exercise intensity at all times while exercising. The ear-hook type pulse measuring device shown in Figure 1 is capable of detecting the pulse without performing any special measurement operations during exercise, and does not interfere with exercise (providing a full-fledged pulse measuring device that maintains and manages exercise intensity). became possible.

[Brief explanation of drawings]

Each of the drawings shows an embodiment of the present invention. FIG. 1 is a graph showing the exercise load pulse rate with respect to age and rank lines for dividing the pulse rate into levels. Fig. 2 is an external view of the ear-hook type pulse meter, Fig. 3 is a sectional view taken along line A-A in Fig. 2, Fig. 4 is a stem block diagram, and Fig. 5 is the signal waveform of Fig. 4. It is a time chart showing. 5...Pulse sensor, 7...Buzzer, 17...Level judgment circuit. 1st mouth

Claims (1)

[Claims] A level determination circuit for ranking the measured pulse rate into a plurality of predetermined levels in a measuring device that measures pulse rate by detecting changes in blood flow or electric potential in the human body using a sensor; By providing an acoustic signal generating circuit that generates different acoustic signals according to each level signal from the acoustic signal generating circuit, and an acoustic transducer driven by the acoustic signals from the acoustic signal generating circuit, it is possible to notify the pulse rate by different sounds. Characteristic pulse measuring device.